<template>
  <van-list
    v-model="bLoading"
    :finished="bFinished"
    finished-text="没有更多了"
    @load="onLoad"
  >
    <!-- <van-cell v-for="item in list" :key="item" :title="item" /> -->
    <slot></slot>
  </van-list>
</template>

<script>
  export default {
    props:{
      loading:{
        type:Boolean,
        default:false
      },
      finished:{
        type:Boolean,
        default:false
      },
    },
  data() {
    return {
      bLoading: false,
      bFinished: false,
    };
  },
  watch:{
    loading:{
      immediate:true,
      handler(v){
        this.bLoading=v
      }
    },
    finished:{
      immediate:true,
      handler(v){
        this.bFinished=v
      }
    }
  },
  
  methods: {
    startLoad(){
      this.bLoading = true;
      this.emitLoad()
    },
    stopLoad(){
      this.bLoading = false;
      this.emitLoad()
    },
    emitLoad(){
      this.$emit("update:loading",this.bLoading )
    },
    complete(){
      this.bFinished = true;
      this.$emit("update:finished",this.bFinished )
    },
    onLoad() {
      // 异步更新数据
      // setTimeout 仅做示例，真实场景中一般为 ajax 请求
      /* setTimeout(() => {
        for (let i = 0; i < 10; i++) {
          this.list.push(this.list.length + 1);
        }

        // 加载状态结束
        this.loading = false;

        // 数据全部加载完成
        if (this.list.length >= 40) {
          this.finished = true;
        }
      }, 1000); */

      this.$emit('load')
    },
  },
};
</script>

<style lang="less" scoped>

</style>